What are the effects of adding diesel engine oil to a gasoline engine?
2 Answers
The effects of adding diesel engine oil to a gasoline engine include: 1. Difficulty starting the car, as the insufficient pressure from the fuel injector causes the diesel to only partially atomize, entering the cylinder in liquid form, leading to incomplete combustion and carbon buildup; 2. Clogging of the fuel injector; 3. After adding diesel engine oil to a gasoline engine, the high-pressure air-fuel mixture reaches the auto-ignition temperature before the spark plug ignites, causing violent combustion, abnormal pressure in the combustion chamber, and potential engine damage, with severe cases leading to cylinder scuffing. The function of the engine is: to convert the thermal energy of gasoline into mechanical energy by burning it in a sealed cylinder, expanding the gas, and pushing the piston to perform work.
Last time at the repair shop, I encountered a customer who accidentally put diesel oil in his gasoline car. Diesel oil has higher viscosity, which reduces lubrication efficiency, increases friction between pistons and bearings, and accelerates wear. Insufficient lubrication also leads to engine overheating, abnormal noises, and even spark plug damage. Over time, carbon deposits accumulate, increasing the risk of fuel injector clogging. Emissions also worsen, increasing pollution. If this happens, stop driving immediately, tow the car to a professional shop to replace with the correct oil, and flush the fuel system to avoid future issues. Always check labels when refueling—don't skimp on this small expense. The engine is the heart of the car; using the wrong oil can cause irreparable damage.
